Hantavirus FAQ

Most hantaviruses are not transmitted from person to person. Andes virus is the known exception. Andes virus can spread through close contact with a person who is sick, but this is usually linked to direct physical contact, prolonged close or enclosed contact, or exposure to body fluids.

Hantaviruses are mainly spread from rodents to people. Exposure can happen when infected rodent urine, droppings, saliva, or nesting materials are disturbed and contaminated particles get into the air. A person may also be exposed if contaminated material gets into the eyes, nose, mouth, or broken skin.

Yes. Rodent droppings can be a risk if they come from an infected rodent, especially if they are disturbed and contaminated particles become airborne. Do not sweep or vacuum rodent droppings before disinfecting.

Hantavirus can become a risk through contaminated air when infected rodent urine, droppings, or nesting material are stirred up. This is why dusty cleanup situations can be risky and why public-health guidance recommends disinfecting before removal.

Early symptoms can include fatigue, fever, and muscle aches. Some people also experience headache, dizziness, chills, nausea, vomiting, diarrhea, or abdominal pain.

Later symptoms can include coughing, shortness of breath, chest tightness, and difficulty breathing. Breathing symptoms after possible exposure should be treated as medically important.

For hantavirus pulmonary syndrome, CDC describes symptoms as often starting 1 to 8 weeks after contact with an infected rodent. For Andes virus, CDC states that signs and symptoms may appear 4 to 42 days after exposure.

Andes virus is a type of hantavirus associated with South America. It can cause hantavirus pulmonary syndrome and is notable because it is the only known hantavirus type that can spread person-to-person.

Andes virus is one type of hantavirus. Hantavirus is the broader family of viruses; Andes virus is a specific member of that family.

Yes. Andes virus can spread person-to-person, usually through close contact with someone who is sick. Most other hantaviruses are not known to spread this way.

CDC states that there is currently no specific antiviral treatment or vaccine for Andes virus. Medical care focuses on early supportive care and managing symptoms.

Do not panic, but pay attention to exposure and symptoms. If you develop symptoms after possible rodent exposure, contact a healthcare provider and tell them about the exposure. For future cleanup, follow official guidance: do not sweep or vacuum before disinfecting, use gloves, wet contaminated material with disinfectant, and wash hands afterward.

No. CDC warns against vacuuming or sweeping rodent urine, droppings, or nesting materials before disinfection because it can stir contaminated particles into the air.

A dead rodent or nearby nesting material can be contaminated. Wear gloves, disinfect the rodent and surrounding area, dispose of it safely, and wash hands afterward. Follow CDC cleanup guidance.

This tracker focuses on human public-health information. If your concern involves a pet rodent, pet exposure, or animal illness, contact a veterinarian or local health authority. People at higher risk of serious illness should follow CDC guidance on pet rodents and rodent exposure.

The best prevention is avoiding contact with rodents and their urine, droppings, saliva, and nesting material. Seal rodent entry points, store food securely, reduce clutter, clean contaminated areas safely, and avoid stirring up dust.

Official public-health agencies have described the broader public risk as low or very low. That does not mean the outbreak is unimportant; it means the known risk is concentrated among exposed passengers, crew, close contacts, and specific monitored groups.

Outbreak numbers can differ because agencies may use different reporting times, case definitions, or confirmation standards. Some reports may include suspected, probable, confirmed, monitored, hospitalized, or deceased individuals differently. The tracker should identify the source and status for every number it displays.

The tracker should prioritize official public-health sources such as CDC, WHO, ECDC, and national or regional health authorities. Media reports may be used only when clearly labeled and should not override official confirmed counts without explanation.

No. Hantavirus Outbreak Tracker is an independent public-information site. It summarizes and links to official sources but is not affiliated with CDC, WHO, ECDC, or any government public-health authority.

Use official public-health agencies, local health departments, and healthcare professionals for medical and public-health guidance. This site is a tracker and explainer, not a medical authority.